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Osmo Decking Oil

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Osmo Decking Oil is ideal for protecting and maintaining your garden decking, but can also be used on most untreated garden furniture.

Dries to a smooth satin-matt finish that is very water-resistant, dirt repellent and easy to maintain and re-finish when required.

It is important to ensure that any new wood has been weathered for at least 6 weeks prior to application to ensure optimal performance and penetration of the oil.

  • Prices
  • Overview


Osmo Decking Oil provides a durable protective finish for all types of softwood and hardwood decking, smooth or grooved. Water-repellent and UV resistant, Osmo decking Oil reduces the risk of swelling and shrinkage and can be over-coated with a single coat of Osmo Anti Slip Decking Oil 430 if required.


decked areas must be clean, dry and frost-free. Old paints, varnishes and other surface coatings must be removed by sanding or with a Paint and Varnish Remover. Old applications of oil based treatments or stains need to be cleaned or lightly sanded. If sanding, use a 120 to 150 grit sandpaper and remove all traces of surface dust.

New wood: If possible apply first coat on all sides of the wood before installation. Hardwoods with an especially high content of oil, leave to weather for about 2 to 3 months (in winter up to 5 months) or wipe over with White Spirit to degrease the surface.

For additional protection against blue stain, rot and mildew, pre-treat with Osmo WR Base Coat 4005 or with Osmo Wood Protector 4006 (biocide-free).


Osmo Decking Oil is ready to use straight from the tin and can be applied with a brush or cloth. Stir well before application and use a brush or soft lint free cloth to apply a thin, even coat of oil along the wood grain. Wipe off any excess when finished and leave to dry. Apply second coat as above or alternatively, apply a single coat of Osmo Anti Slip Decking Oil 430 if required.


Surfaces treated with Osmo Decking Oil are very easy to clean and maintain. Just use a moist cloth with Osmo Wash And Care 8016. Particularly persistent stains can easily be removed with Osmo Liquid Wax Cleaner 3029. If necessary, apply a further coat of Osmo Decking Oil onto areas that have become worn or dull due to high foot traffic.

Thinning and Cleaning

There is no need to thin this product prior to application. Routine cleaning can be done with Barrettine Decking and Patio Cleaner or Ronseal Decking Cleaner.

Application brushes and equipment can be cleaned with white spirit.


This product can be stored up to 5 years or more if the tin is full and tightly closed. Store in dry place. If thickened by frost it will regain its normal consistency under normal temperatures within 24-36 hours.

If there is an amount left over after application, it is recommended that the remaining oil is poured into an alternative container of the same volume e.g. 1 ltr of oil left pour into a 1 ltr drinks bottle or other secure container. By filling the alternative container to the rim and securing an air tight lid, the remaining oil will stay in good condition for much longer than if left in a container half filled with air.


  • Keep out of the reach of children.
  • Do not fill into containers normally used for food and drink.
  • Work in areas with good ventilation.
  • Do not apply in the presence of naked flames, hot surfaces or unprotected electrical equipment.
  • In case of contact with eyes rinse immediately with plenty of water.
  • Contains 2-butanonoxime. May produce an allergic reaction.

Osmo decking oil is safe for human, animal and plant when fully dried.

Drying Time

Allow 10 to 12 hours drying time between coats and the final finish. Drying times may vary depending on the decking type, air temperature and humidity.

  • Reviews

Osmo Decking Oil reviews - Rating: 5 out of 5 stars, based on 5 reviews.


 750ml, Clear - 007
Excellent product from Osmo. Beautiful finish.
Great product from Osmo, easy to apply and with lovely natural looking finish.

 2.5L, Clear - 007
Easy peasy
I've used Osmo products on my interior wooden floors and been very happy, so thought I'd give the decking oil a go. Very easy to apply (I used the Osmo 150mm brush) and gave a beautiful, natural, rich finish. Unlike previous reviewers, I found that the coverage was short of what was stated on the tin. I suspect this was due to the dry nature of my decking and the fact that the decking is deeply ribbed, thus increasing the surface area of the wood.
Geoffrey Ellis

 2.5L, Clear - 007
Very good coverage, easy to apply and looks good.
The oak timber decking has only been treated for 1 month so I cannot say how it will weather, but it has currently a good looking rich colour (the oak is well seasoned 10"x4" section). The oil is thin and was quick to apply with a good quality 4" brush. It applied 2 coats, a day apart. The coverage was almost exactly what was stated, even though the wood was fairly dry. This oil is expensive compared to other makes, but it requires substantially less as it contains almost exclusively oils, rather than solvents as with many others (I was told this by the help person on this site).
Kim Taylor

 2.5L, Clear - 007
Brilliant product
Product went on very easily and quickly, my deck is the best it has ever looked (even when it was new!). Very pleased with the end result.
Peter Boddy

 2.5L, Clear - 007
Quality Product, what you would expect with German Heritage.
Took advice from the expert at Wood Finishes Direct and used this product, which may appear expensive for the quantity bet works out very reasonable when you calculate the coverage compared to other products on the market. Very pleased I used it as it did the job perfectly on my Red Balau hardwood decking, as its the best its ever looked and was effortless to apply with the Osmo application brush which was also recommended by WFD. I have used many finishes from Multiple DIY Chains, but they seem to only stock products for the well advertised brands with very little insructions for guidance. Osmo products give you comprehensive instuctions which are easy to understand.

per litre
10 hours
dry time

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* Coverage can vary depending upon on the type of wood used and the amount of product applied. Litreage amounts shown above are total, not 'per coat' amounts.
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